OpenCascade backend

import { createEvaluator } from "invariantcad";
import { createOcctKernel } from "invariantcad/kernels/occt";

const kernel = await createOcctKernel();
const evaluator = await createEvaluator({ kernel });

const kernel = await createOcctKernel({
  wasm: new URL("/assets/occt-wasm.wasm", location.href),
});

const kernel = await createOcctKernel({
  modelingTolerance: 1e-7,
  tessellation: {
    linearDeflection: 0.1,
    angularDeflection: 0.3,
    relative: false,
  },
});

const kernel = await createOcctKernel({
  maxExactBooleanHistoryRecords: 250_000,
  maxExactEdgeTreatmentHistoryRecords: 250_000,
  maxExactSolidOffsetHistoryRecords: 250_000,
});

import { readFile } from "node:fs/promises";
import { createOcctKernel } from "invariantcad/kernels/occt";
import {
  INVARIANTCAD_OCCT_FACADE_0_9_0_RELEASE_MANIFEST_SHA256,
  loadAttestedOcctRuntime,
} from "invariantcad/kernels/occt/node";

const bundle = "/opt/invariantcad-occt-facade-0.9.0";
const [releaseManifest, javascript, webassembly] = await Promise.all([
  readFile(`${bundle}/metadata/release.json`),
  readFile(`${bundle}/runtime/occt-wasm.js`),
  readFile(`${bundle}/runtime/occt-wasm.wasm`),
]);

const attestedRuntime = await loadAttestedOcctRuntime({
  releaseManifest,
  expectedReleaseManifestSha256:
    INVARIANTCAD_OCCT_FACADE_0_9_0_RELEASE_MANIFEST_SHA256,
  javascript,
  webassembly,
});
const kernel = await createOcctKernel({ attestedRuntime });

const kernel = await createOcctKernel({
  moduleFactory: createOwnedOcctModule,
  wasm: ownedWasmBytes,
  onOutput: (message) => logger.info(message),
  onError: (message) => logger.error(message),
});

const output = evaluated.output("body");

const step = output.export("step");
const textBrep = output.export("brep");
const binaryBrep = output.export("brep-binary");